Hi kriminal,
As well as taking a good multivitamin &mineral,you could try taking some essential fats too,do you eat seeds or nuts,take any oils?these fats can ease anxiety too.
I try & vary the colours of stuff I eat, different vits&minerals in each colour food,so a colourful dinner is full of the good stuff and always organic if possible.
"Let food be your medicine &medicine be your food"
Sunflower